toad wrote:
Mike,

A blinking display is the signal for low voltage (10.5-11) and it would
show up first during transmit. I am not so sure about the buzzing
sound though.

Squealing or buzzing is a very common problem with low battery voltage
on transmit.



Test the disconnect the radio and test the voltage on the DB-15
connector. Pins 4 and 5 are +, pins 2 and 3 are ground. Test those
with a multimeter for voltage at the radio. The fix if that's bad is
to rewire the radio power leads.

You might just need to clean the connectors on the radio.

Could be bad wiring or dirty connectors, but a more likely problem
is just a trashed battery that won't hold a charge. Before trying
to measure the voltage at the radio, I'd test the voltage at the
battery to see if it's good. And yes, it does need to be measured
while trying to transmit in order to give real results.

-Dave




If you can't fix it that way, pull it and send it to Erie Aviation.

Todd Smith
3S

Who has rewired his becker 3 time this year, before I got it right.


wrote:

I have a Becker 3201 radio in my glider that has a problem. With a
fully charged 14 V system I find that when I push the PTT switch the
display starts to blink and the radio then transmits a garbled buzzing
noise. A friend thinks that the flashing is a low power signal and
that the 24 year old wiring may be offering enough resistance to cause
a voltage drop. The radio receives just fine. Anyone know or heard of
this problem (and the fix) in the past? TIA

Mike
KV